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Finding the Fourth Proportional to 5,440.92, 7,509 and 3,345

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Solution

The fourth proportional to 5,440.92, 7,509 and 3,345 is: 4,616.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,440.92 : 7,509 = 3,345 : x
  2. Step 2: Convert to fraction form
    5,440.92/7,509 = 3,345/x
  3. Step 3: Cross multiply
    5,440.92x = 7,509 × 3,345
  4. Step 4: Simplify right side
    5,440.92x = 25,117,605
  5. Step 5: Solve for x
    x = 25,117,605/5,440.92
  6. Step 6: Final answer
    x = 4,616.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.